593260 Air Filter with Spark Plug for Lawn Mower, Air Filter Set for 500EX 550E 625EX 725EXi, Replacement Parts for TB110 TB115 TB200 TB230 TB330 TB370 Lawn Mower Engines (1 Air Filter,1 Spark Plug)

What It Is

This kit includes one air filter and one spark plug designed for small engines in Troy-Bilt, Craftsman, and other lawn mowers. It’s a basic tune-up set for 500EX, 550E, 625EX, 725EXi engines, plus TB-series models like TB110, TB115, TB200, TB230, TB330, and TB370.

Fitment & Compatibility

Before buying, confirm your engine model—not just the mower brand. This kit fits Briggs & Stratton 500EX, 550E, 625EX, and 725EXi engines, plus the listed TB-series engines. Check the engine’s model number (stamped on the shroud or near the spark plug). The air filter and spark plug are aftermarket replacements, not OEM. Measure the spark plug gap (typically 0.030”) before installation—it may not come pre-gapped. Air filter dimensions are roughly 3” x 1.5” x 1.5”; verify your old filter fits those measurements.

Key Things to Know

• Quality vs OEM: The air filter is dense foam, similar to OEM but may feel slightly less robust. The spark plug is a standard copper-core type (like a Champion RJ19LM equivalent). Works fine for routine maintenance but not for heavy-duty or commercial use.
• Installation difficulty: Easy—remove the old filter and plug, install the new ones. No special tools needed beyond a socket wrench for the spark plug. Gap the plug to spec before installing.
• Common gotcha: The spark plug may be too long or short for some engines not listed. If your mower uses a different heat range (e.g., for high-deck or pressure washer engines), skip this set and buy a matched plug.
• Compatibility note: Does not fit all TB-series engines—double-check your exact engine code. The TB330 and TB370 are covered, but older or newer variants may differ.

Should You Buy It

If you own one of the listed engines and need a quick, budget-friendly tune-up, this kit is a solid pick. It’s ideal for DIY homeowners who want to replace both parts at once without hunting for separate pieces. Skip it if you need OEM parts for warranty purposes or have a non-standard engine—then buy matched OEM replacements.